$size: 50px;
$tabBarH: 90px;
$mainNavW: 160px;
page{background-color: #fff;}
.main-orderFood{
    .main-classify{
        position: absolute;left: 0;top: 0;bottom: $tabBarH;width: $mainNavW;background-color: #f5f5f5;overflow: hidden;
    }
    .main-goodList{
        position: absolute;left: $mainNavW;right: 0;top: 0;bottom: $tabBarH;overflow: hidden;
    }
}